Power consumption stabilization system and method

Abstract

A source signal is provided. The source signal is XORed with a scrambling random signal to generate a scrambled signal. The scrambled signal is transmitted through the digital logic circuit. The scrambled signal is XORed with the descrambling random signal logically identical to the scrambling random signal to produce a descrambled signal identical to the source signal. In one embodiment, the scrambling random signal is transmitted through the digital logic circuit and used as the descrambling random signal. In another embodiment, the scrambling random signal and descrambling random signal are generated independently using pseudo-random number generators. In yet another embodiment, the scrambling random signal is self-synchronizing and is contained within the pattern of the scrambled signal.

1. A method for stabilizing power consumption in a digital logic circuit, the method comprising:
 providing a source signal; 
 XORing the source signal and a scrambling random signal to generate a scrambled signal; 
 transmitting the scrambled signal through the digital logic circuit; 
 passing the scrambling random signal around the digital logic circuit; and 
 XORing the scrambled signal and a descrambling random signal logically identical to the scrambling random signal. 
 
   
   
     2. The method of  claim 1 , additionally comprising storing the scrambling random signal. 
   
   
     3. The method of  claim 1 , additionally comprising:
 generating the scrambling random signal using a first pseudo-random number generator responsive to a reset signal; and 
 generating the descrambling random signal using a second pseudo-random number generator responsive to the reset signal. 
 
   
   
     4. The method of  claim 1 , additionally comprising:
 generating the scrambling random signal using a self-synchronizing scrambler responsive to the scrambled signal; and 
 generating the descrambling random signal using a self-synchronizing descrambler responsive to the scrambled signal.